.......but not when RWY 32 is also in use with GA and domestic turboprop traffic simultaniously taxiing for Delta.
The 'follow the greens' system is tailored to each taxiing aircraft so as one flight deviated from the common path the greens illuminate correctly for the next aircraft. So as the domestic turbo-prop continued straight ahead at 'D' the lights would switch indicating a turn onto 'B1" for the following traffic.
Given most airline operators taxi a reasonable distance behind the preceding traffic, they should have more than adequate time to recognise that the greens go 'round the corner.
I'm not exactly sure how it works (i.e.: does it use transponder or other wizardry.....) but the system in Singapore is virtually fully automated or that's what I was told when I visited the tower some years ago.